In 2018, Australia and 15 countries in the #BluePacific released a security declaration reaffirming climate change as the “single greatest threat” to the region. The next administration in the White House also understands climate change as an “urgent national security threat”. https://twitter.com/JohnKerry/status/1330925522579312640
Former US Secretary of State John Kerry has been appointed to a role as the President’s Climate Envoy, and he will sit on the National Security Council. He will likely press other states for renewed global ambition under the Paris Agreement.
The US worked with Pacific island states, and particularly the Marshall Islands, in lead up to the Paris Agreement negotiations in 2015. In 2021, as the world moves to commit stronger targets under the agreement we may see more headlines like this one
https://www.theaustralian.com.au/business/business-spectator/news-story/kerry-backs-climate-urgency-at-pacific-islands-forum/c00f34f4aa60088476c9c32140b4fe3c

Fiji will host next year’s Pacific Islands Forum, and seems keen to renew the relationship: https://mobile.twitter.com/FijiPM/status/1330949676321841153